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I-6 Engines For GMCs that came with the Inline 6 Engines

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  #1  
Old May 4th, 2016, 05:38 PM
kru_s kru_s is offline
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Default Just bought a 1964 GMC truck, need motor

I just bought a 1964 GMC Long bed with a inline 6 it needs some work on the motor. So how hard would it be to put in a 383 with a TH350 tranny? Also would it be worth it or not? Any comments are welcomed.
Mark
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  #2  
Old May 5th, 2016, 12:12 PM
jturk jturk is offline
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Default Re: Just bought a 1964 GMC truck, need motor

Actually a 383 and 350 trans installs pretty easily. You'll need some V-8 engine stands from the crossmember to the frame and a new transmission mount relocated for the trans length. Finally you'll probably need to have the driveshaft length changed. One thing to consider would be to find a GMC big block V-6 either 305 or 351 with the same trans and its adapter. Think that would be a real good combo. Just food for thought. Good luck and let us know how it goes.
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Old May 5th, 2016, 08:09 PM
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TJ's GMC TJ's GMC is offline
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Default Re: Just bought a 1964 GMC truck, need motor

351 V6 with the 4 barrel mod and dual 3 inch exhaust would be the bees neeze! Careful cause putting a chevy motor in a GMC is a sin round here.
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Old May 5th, 2016, 08:57 PM
bigblockv6 bigblockv6 is offline
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Default Re: Just bought a 1964 GMC truck, need motor

Quote:
Originally Posted by TJ's GMC View Post
351 V6 with the 4 barrel mod and dual 3 inch exhaust would be the bees neeze! Careful cause putting a chevy motor in a GMC is a sin round here.
In the past we have been a lot easier with members that had trucks originally with the inline six since it was a Chevy being replaced with a different Chevy engine Only when someone pulls out a GMC V6 to replace with a Chevy get slammed. idea a bigger V6 though of at least 351-401 and 4bbl is a great idea
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Old May 6th, 2016, 05:49 AM
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Default Re: Just bought a 1964 GMC truck, need motor

Quote:
Originally Posted by bigblockv6 View Post
In the past we have been a lot easier with members that had trucks originally with the inline six since it was a Chevy being replaced with a different Chevy engine Only when someone pulls out a GMC V6 to replace with a Chevy get slammed. idea a bigger V6 though of at least 351-401 and 4bbl is a great idea
There's that 401 for sale in Kansas taunting me in my dreams. It ain't no fair I tell ya!!!!!
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1964 GMC 1500 305E/sm420 4 barrel intake mod and dual exhaust.
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1964 Chevy C20 292/SM420
1966 Chevy C10 292 hotrod 6/TKO600
1977 Chevy C20 572 BBC/TH400
1984 Chevy C30 292/SM465

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